/**
 *		Licensed to the Apache Software Foundation (ASF) under one
 *     or more contributor license agreements.  See the NOTICE file
 *     distributed with this work for additional information
 *     regarding copyright ownership.  The ASF licenses this file
 *     to you under the Apache License, Version 2.0 (the
 *     "License"); you may not use this file except in compliance
 *     with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *      Unless required by applicable law or agreed to in writing,
 *     software distributed under the License is distributed on an
 *     "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *     KIND, either express or implied.  See the License for the
 *     specific language governing permissions and limitations
 *     under the License.
 *     
 *     Image Resizer Project
 */

package image.resizer.ui;

import javax.swing.JProgressBar;

import image.resizer.IProgressListener;

/**
 * Task progress event handler.
 *  
 * @author Dudarev Ilya
 */
public class ProgressEventHandler implements IProgressListener {

	private JProgressBar progressBar;
	private int counter; 
	private int initial;
	IWorkCompleted callback;
	
	public ProgressEventHandler(JProgressBar progressBar, IWorkCompleted callback) {
		counter = 0;
		this.progressBar = progressBar;
		this.callback = callback;
	}
	
	public void setInitialCounter(int counter)
	{
		initial = counter;
		if(initial == 0)
		{
			progressBar.setValue(100);//TODO ?
			callback.workCompleted();
		}
	}
	
	public void itemCompleted() {
		counter ++;
		if(initial != 0)
		{
			int percentage = (counter*100/initial);
			progressBar.setValue(percentage);
			if(percentage == 100)
			{
				callback.workCompleted();
			}
		}
	}
}
